Self clamping papek cutting machine



4 Sheets -Shet 1.

(No Model A.MALM. SELP-GLAMPING PAPER CUTTING MACHINE.

Pat rited Sept. 17,1895.

' INVENTOR- m w MM MW ATTORNEY;

ANDREW RGRMMM. PHOTO-UTHDWASHINGTON. n c

(No Model.) 4 Sheets-Sheet 2.

ALMALM.

SELF GLAMPING PAPER CUTTING MAGHINB.

Patented Sept; 17, 1895.

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JULQLQM A TTORNEY.

(No Model.) 4 Sheets-Shet 3. -A'. MALM. SELF CLAMP-ING PAPER CUTTING MACHINE.

Patented Sept. 17, 1895.

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(No Model.) 4 Sheets- 8mm" 4.

- A. MALM. :SBLP QLAMPING PAPER GUTTINGMAGHINE.

NO. 546,454. Patented Sept. 17,1895.

' INVENTOH WITNESSES: 4M 4 4 ATTORNEY.

ANDRIW BJZRMMM. PHDTD-LTHQWASNINmiLDS.

UNITED STATES PATENT Cri ics.

ALEXANDER MALM, OF BROOKLYN, NEW YORK. I

SELF-CLAMPING PAPER-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 546,454, dated September 17, 1895.

Application filed May 18, 1894.- Serial No. 511,650- (No model.)

To aZZ whom it may concern:

Be it known that I, ALEXANDER MALM, a citizen of the United States of America, residing at Brooklyn, in the county of Kings, in the State of New York, have invented certain new and useful Improvements in Self-Clamping Paper-Cutting Machines, of which the following is a specification.

This invention relates to that class of paper-cutting machines in which the mechanisms for moving the clamp for holding the paper during the cutting operation and moving the knife are connected in such manner that the resistance of the paper to the action of the knife reacts on the clamp for holding said paper, whereby such resistance is utilized and the pressure regulated somewhat by the resistance.

Theobject of this invention is to provide a simple, convenient, and effective machine of this character.

Figure 1 of the accompanying drawings represents a front elevation of this paper-cutting machine, a portion of the top bar of the machine being broken out. Fig. 1 represents a cross-section of the driving-shaft and the clutch thereon. Fig. 2 represents a vertical transverse section of the machine on line 2 2 of Fig. 1. Fig. 3 represents a vertical transverse section of the machine approximately on the line 3 3 of Fig. 1, certain gearing being omitted in order to better expose other parts. Fig. 4 represents a horizontal section of the machine approximately on line 4 4: of Fig. 1. Fig. 5 represents an end view thereof partly in section.

Similar letters of reference indicate similar parts in the difierent figures.

The frame of this machine may be of any suitable construction. As shown, it comprises two end standards A and a top crossbar A connecting said standards, and front and rear cross-bars A also connecting said standards. A cutting-bed B is supported in the frame. A vertically movable paperwclamp 0 extends across over the bed B. This paperclamp is provided at its opposite ends with dependent rods 0', which are guided in ways or slots on the standards. These vertical rods 0 are provided at their lower ends with lateral inwardly-projecting arms C provided with vertical racks O disposed near the end Standards. These racks O are connected by a bow -shaped bar C so that they move in unison. The knifestock D, carrying the knife D, is guided in vertical ways of the standards, and is hung by a link D to a lug depending from the top A of the frame, whereby it is adapted to swing laterally to produce a draw-cut. The knife is connected at its opposite ends by links F to the outer ends of two knife-operating levers F. Each of these knife-operating levers preferably comprises two arms disposed in different vertical planes, as more clearly shown in Fig. 4, and joined by an elongated hub F, embracing a fulcrumpin F which is mounted in lugs F disposed on each of the standards of the frame. The inwardly-extending arms of the levers F are respectively connected, by means of links F to a vertically-movable slide F disposed on a rod F or'other suitable gnideway.

The main or driving shaft G is supported in bearings of the end standards and extends at one end beyond the frame, and has also a bearing on the bracket A attached thereto. This shaft is connected with any suitable source of power for keeping a continuous rotary motion during the operation of the machine. Two clntch-pinions G and G are mounted loosely on said shaft apart from each other, and provided on their inner sides with clutch-faces K and K respectively. A double clutch K is disposed on the driving-shaft between the pinions G and G being provided with a clutch K adapted to engage the clutch-face K of the pinion G, and with a clutch-face K adapted to en gage the clutch-face K of the pinion G This clutch K is keyed to the main shaft G, as shown in Fig. 1, in such manner that it is adapted to slide longitudinally on said shaft and rotate with it. The clutch-faces may be simply friction-surfaces or interlocking clutch-faces. An arm L, hung to a bracket B dependent from the bed B, is connected with the clutch K, and adapted to move said clutch in either direction on the shaft G. A shaft H, which I term a setting-shaft, is disposed adjacent to the driving-shaft G parallel therewith. This shaft is supported in fixed bearings of the frame, and is provided with a loose pinion H, which meshes with the pinion G of the driving-shaft G, and with two fixed segments H which mesh with the vertical racks G which are connected with the paper-clamp C. This shaft ll is also provided with a fixed segment ll".

Another shaft J, which I term an auxiliary or climbing shaft, is supported in the outer ends of the swinging-arms J which are hung loosely on the shaft ll. This shaft J has a fixed pinion J which meshes with the segment ll". It also has a large fixed gear-wheel J, with which the loose pinion 11. of the shaft l[ meshes. Two arms J", hung on the shaft J, are connected at their outer ends to the vertical slide F. A resettingshaft I is supported in fixed bearings in the brackets A and provided at one end with a pinion 1, which meshes with the pinion G on the driving-shaft, and at the other end with pinion 1 which meshes with the pinion ll on the shaft H.

The clutchshifting arm L is operated by either a hand-lever, a foot-lever, or automatically. A red O connects its lower end with the vertical arm of an elbow-lever O, which is fulcrumed on an elongated pivot-pin N, supported in one of the frame-bars and in a lug N on one of the standards. A hand-lever L is fixed at its lower end to the outer end of the pivot-pin N. This lever stands normally in vertical position and is provided at its upper end with a handle by means of which it may be swung longitudinally in either direction, being held in its adjusted position by a curved spring 13 which is attached to the under side of the bed-plate l3 and engages an inwardly-projecting pin on said lever. \Vhen the hand lever L is swung toward the left, as shown in Fig. 1, it turns the pivot-pin N to which the elbow-lever O is fixed and the rod is thereby shifted toward the left, causing the dependent clutchlever L to swing also toward the left and carry the clutch K into contact with the clutch-face K of the pinion G. A foot-lever L provided with a foot-board O is fulcrumed on a pivot-pin 0 mounted in one of the bars of the frame and is connected with the elbowlever O by a link 0". Either the hand or foot lever may be used by the operator for shifting the clutch. A reversing-lever L is fixed to the elongaged pivot-pin 0" and operates to automatically reverse the clutch when the knife has completed its cutting-stroke. This lever lies in the same vertical plane with one arm of the knife-actuatinglevers F, and, when the knife approaches the lower end of its stroke, said arm of the knife-lever strikes the reversing-lever L and depresses it, whereby the pivot-pin O of the foot-lever L is turned and motion communicated from said lever through the link 0 to the elbow-lever O, thence to the rod 0, which is shifted toward the right, causing the clutch to be disengaged from the clutch-face of pinion G and the clutch K to become engaged with the clutch-face K of the pinion G whereby the knife and clamp are raised. A stop mechanism for stopping the machine after the clamp and knife have been elevated to normal positions comprises a lever L fulcrumed on a pivot-pin Q attached to one of the standards, as shown in Fig. 5. One end of this lover I. is in the path of a tappet C, on one of the clamp-bars C, and the other end thereof is connected by a rod Q to one end of an elbowlever Q The other end of the elbow-lever Q is connected by a link Q" with the horizontal rod 0 heretofore described, thelink Q being preferably integral therewith. \Vhen the clamp C approaches the upper end of its stroke, the tappet C strikes the upper end of the stop-lever L" and lifts it, whereby the lower end of said lever is depressed and the rod Q correspondingly depressed, causing the elbow-link Q to swing on its pivot and push the rods Q and 0 toward the left a suflicient distance to release the clutch K from the pinion G without causing it to engage the pinion G, but leaving it in normal position.

The lever L is provided at its rear end with a fixed dependent arm P, provided with a stud P A locking-lever P is pivoted near the foot-lever L and provided with a foot-board 1". This locking foot-lever P is provided with a double inclined lower face, having a notch l at the apex thereof, which is adapted to engage the pin P on the dependent arm 1. This lever P is provided with a weight at its outer end, which tends to normally hold its inclined notched face out of contact with said stud; but when the attendant depresses the inner end of this lever by placing his foot on the board P', the double inclined face engages the pin P of the dependent arm of the foot-lever L and swings said lever into central position, and holds it there by the notch 1 whereby the clutch K is moved into normal inactive position and held therein. The attendant can thus readily stop the machine at will at any point of its motion.

The operation of the machine will 11 w be described. The clutch K being normally in inactive position between the loose elutehpinions G and G and the paper to be out having been adjusted on the bed B, the machine is started by depressing the foot-lever L or swinging the hand-lever L toward the left, whereby the clutch K engages the clutchpinion G and causes it to turn in the direc tion of its arrow in Fig. 2, and motion is thereby communicated to the gear-wheel 11', which is loose on the shaft ll, and thence through the pinion 11 which is rigidly connected with the gear-wheel II and also loose on the shaft II, to the gear-wheel J, fixed on the shaft J, supported in the swinging arms J The pinion J fixed on the shaft J and meshing with the segment I1, fixed on the shaft H, causes said segment to swing downward and the shaft II to turn in the direction of its arrow in Fig. 2. This turning of the shaft 11 causes the two segments 11', which are fixed to said shaft and mesh with the racks C to swing downward, whereby the clamp G is lowered until it comes in contact with the paper on the bed 13. \Vhcn the clamp C is arrested in its downward movement by the paper on said bed, the downward swinging of the segm ents H and H ceases, and then the pinion J continuing to rotate through the motiontransmitting mechanism heretofore described, climbs up the segment H carrying with it the shaft J. This upward movement of the shaft J lifts through the links J the slide F This upward movement of the slide actuates through the links F the knife-actuating levers F, whereby the knife-stock carrying the cutting-knife is made to descend and perform its out upon the paper on the bed B. When the cut is finished, one arm of one of the levers F strikes the reversing-lever L and actuates it, whereby the clutch K, through the mechanism hereinbefore described, is shifted out of engagement with the clutch-pinion G and into engagement with the clutch-pinion G Motion is then transmitted from the pinion G2 to the pinion I on the resettingshaft I, the motion being in the direction of the arrows adjacent to said pinions, as shown in Fig. 3, and the pinion 1 imparts motion to the gear-wheel H and its connected pinion H loose on the shaft H, in a direction opposite to that indicated by the arrows in Fig. 2. The pinion H communicates motion to the gear-wheel J, also in a direction opposite to that indicated by its arrow in Fig.2. The pinion J moving in the same direction as the gear-wheel J, causes the segment H to swing upward into normal position. This upward movement of the segment'H causes the shaft H to turn with it and the segments H to act on the racks of the clamp to lift said clamp to its normal position. When the clamp has nearly reached its normal position, it actuates the automatic stop-lever L whereby the clutch K is shifted out of engagement with the pinion G into an inactive position between the said clutchpinion and the clutch-pinion G. When the clamp O has reached the end of its upward stroke, the shaftJ is still rotated through the gear J and pinion H and the pinion J rides down on the rack H whereby the climbingshaft J is lowered and the slide F depressed, such depression of the slide actuating the knife-levers F in such a way as to raise the knife-stock D and its knife D. All the parts are thus restored to their normal positions and the machine is ready to be started for another cutting operation after the same paper has been readjusted or other paper placed on the bed B.

I claim as my invention- 1. In a paper cutting machine the combination of a work bed, a movable clamp adapted to clamp the paper on said bed, and provided with a rack, a movable cutter adapted to cut the paper on said bed, a setting shaft, a segment fixed on said setting shaft and engaging said rack, a transmitting segment also fixed on said setting shaft, a movable auxiliary shaft journaled in swinging arms supported on said setting shaft, a pinion fixed on said auxiliary shaft and meshing with the transmitting segment on the setting shaft for imparting motion thereto, a gear wheel fixed on said auxiliary shaft, a pinion loose on said setting shaft and meshing with said gear wheel, levers for actuating the cutting knife, connected with said auxiliary shaft, and means for actuating said loose pinion.

2. In a paper cutting machine the combination of a work bed, a movable clamp adapted to clamp the paper on said bed and provided with a rack, a movable cutter adapted to cut the paper on said bed, a setting shaft, a segment fixed on said setting shaft and engaging said rack, a transmitting segment also fixed on said setting shaft, a movable auxiliary shaft journaled in swinging arms supported on said setting shaft, a pinion fixed on said auxiliary shaft and meshing with the transmitting segment on the setting shaft for imparting motion thereto, a gear wheel fixed on said auxiliary shaft, a pinion loose on said setting shaft meshing with said gear wheel, levers for actuating the cutting knife connected with said auxiliary shaft, a gear loose on the setting shaft and connected with the loose pinion thereof, a driving shaft provided with a pinion meshing with said gear, a resetting shaft provided with a pinion also engaging said gear on the setting shaft, another gear loose on the driving shaft, a pinion on said resetting shaft meshing with the latter, and a clutch mechanism for operating either of the gears on the driving shaft to impart motion in either direction to the setting shaft.

3. In a paper cutting machine the combination with the clamp and knife of the knife levers, the slide, the main shaft provided with clutch pinions, as G, G and double clutch as K, the setting shaft with the gear wheel, as H, pinion as H toothed clamp segments as H and toothed knife segments as H the clamp racks, as 0 the resetting shaft with pinions as I, I and the auxiliary shaft with gear wheel as J and pinion as J the whole adapted to operate substantially as described.

4. In a paper cutting machine, the combination with the clamp and knife, of the knife levers, rods as F, connecting the levers to the knife stock, the slide, links as F connecting the slide to the knife lovers, the main shaft with clutch pinions as G, G and double clutch as K, the setting shaft with gear wheel as H, pinion as H toothed clamp segments as H and toothed knife segment as 1-1 the clamp racks as C the resetting shaft with pinions as I, 1 the auxiliary shaft provided with gear wheel as J, which meshes with the pinion H on the setting shaft, and links as J 4 connecting the slide to the auxiliary shaft, the whole adapted to operate substantially as described.

ALEXANDER MALM.

Witnesses:

CnAs. WAHLERS, HAROLD W. I-IoovEn, 

